Useful links:
Anything and probably everything onGeek_for_geeks
OOP in CPP
std::cin.getline() vs. std::cin
atoi() in cpp strings
string.length() vs. string.size()
Constructors in CPP
Destructors in CPP

Useful links:
Anything and probably everything onGeek_for_geeks
Constructors in CPP
Destructors in CPP
References in CPP
Pointer to member functions

Useful links:
Anything and probably everything onGeek_for_geeks
Copy Constructor in CPP
Operator Overloading in CPP
Fixed Point Representation
Fixed Point Conversion
Triangle area by 3 points
Check whether a given point lies inside a triangle

Useful links:
Anything and probably everything onGeek_for_geeks
Inheritance in CPP
Public vs. Protected in CPP
Multiple Inheritance in CPP

Useful links:
Anything and probably everything onGeek_for_geeks
How to initialize array of objects

Useful links:
Anything and probably everything onGeek_for_geeks
Exception Handling in CPP
Try Catch Statements Explained

Useful links:
Anything and probably everything onGeek_for_geeks

Useful links:
Anything and probably everything onGeek_for_geeks
Templates in C++

Useful links:
Anything and probably everything onGeek_for_geeks

Containers I've used:
ex00 -> map
ex01 -> stack
ex02 -> vector && list

Useful links:
Anything and probably everything onGeek_for_geeks
RPN Definition
RPN Calculator/Visualizer
Merge-sort vs. Insertion-sort
Merge-Insertion-sort definition